PRE-JOB TESTS BRING BEST SLURRY SEAL RESULTS

THE WET TRACK ABRASION TEST IS RECOMMENDED TO OBTAIN THE BEST MIX PROPORTIONS FOR SLURRY SEAL MIXES. GOOD SERVICE UNDER TRAFFIC DEPENDS ON THE FOLLOWING FACTORS: (1) AGGREGATE SHOULD BE SHARP CRUSHED AGGREGATE, OR A BLEND OF SHARP CRUSHED AGGREGATE WITH SAND, (2) GRADATION RANGE DENSELY GRADED FROM NO. 4 TO NO. 200, WITH 5 TO 15 PERCENT PASSING 200, (3) FREE OF CLAY MINERALS AND SAND EQUIVALENT OF AT LEAST 40, (4) MIXING GRADE EMULSION SELECTED BY THE WET TRACK ABRASION TEST, (5) TWO TO THREE GAL. EMULSION PER 100 LB. OF DRY AGGREGATE, (6) APPLICATION BY SELF-PROPELLED MACHINE, (7) TRAFFIC CONTROL AND ADEQUATE CURING, NORMALLY 4 HOURS, AND (8) CLEAN PAVEMENT BY SWEEPING PLUS PREWETTING AND POSSIBLY A TACK COAT. A BETTER METHOD IS NEEDED OF LOADING THE ABRADING DEVICE AND A STANDARDIZED WAY OF MEASURING FLOW. SNAGS HAVE BEEN FOUND IN DETERMINING THE CURING RATE. REFERENCES: WET TRACK ABRASION TEST, KARI, COYNE, DALLAS MEETING OF AAPT, FEBRUARY 1964.

• Supplemental Notes:
  • Vol 110, No 6, PP 108-109
• Publication Date: 1967-6

Media Info

• Serial:
  • Roads and Streets
  • Publisher: Donnelley (Reuben H) Corporation

Subject/Index Terms

• TRT Terms: Abrasion tests; Aggregate gradation; Blending; Cleaning; Concrete curing; Crushed aggregates; Flow measurement; Mix design; Pavements; Sand; Slurry seals; Traffic; Traffic control
• Old TRIS Terms: Aggregate blending
• Subject Areas: Highways; Maintenance and Preservation; Materials; Operations and Traffic Management; Pavements;

Filing Info

• Accession Number: 00210682
• Record Type: Publication
• Files: TRIS
• Created Date: Jan 16 1994 12:00AM